Ever ever? It’s cryworthy for sure. I have a strong and distinct memory of crying at having the ugly duckling read to me at 3 or 4. Bawling while squeaking out “They were so mean to him”. 
Does that count? Too young?

Some additional comments on the technique:

Even the acknowledgements seem a continuation of unreliability, unless he is unaware of it. He says in the Haber chapter that he only wrote one paragraph that was fiction. Which one? Maybe technically true, but he doesn’t acknowledge another form of his fictionalization. For example, the Irony of Haber’s not knowing his work would be used to kill his own relatives is highly interpretive by the author. It may not be invented entirely, but it’s certainly not nonfiction. It’s a discursive thought of the narrator, and not something that would make it into a history or a biography.

Schwartzchild is depicted as disturbed by the implications of his discoveries, and he reflects on the “spreading singularity as he surveys the hellscape of the eastern front”. But in reality, he is otherwise said to have decided the equations were what they were and was unconcerned….but letter to his wife expressed concern…it’s hard to know the reality, again in keeping with the quantum mechanical way of thinking as imposed (as these equations do not actually do!) on macroscopic human life. His method is to describe the thoughts of characters when he cannot possible know them.

I was struck by the Mochizuki chapter. Incidentally, I was happily shocked this character was included because I have followed the current controversy surrounding his uninterpretable theory for several years. He situates him in his office, and then describes in elaborate detail what one might see out the window of the office. Of course there’s no particular reason to know whether Mochizuki has ever looked out that window nor has ever observed the things through it that are described.
I could go on. Fascinating technique, I actually enjoyed seeing where the narrative deviated from reality or at least knowability!
 

But I am evidence of the possibility or relishing the book from a starting state of near  ignorance of the people and theories.